* adjust out-of-band message abnf
* define hostname and encoded using prose-val
* elaborate on base64
* corrections up to SMP procedure
* fix CONN -> NEW
* update SMP protocol to align with the implementation
* remove Possible extensions from TOC
* lists
* corrections
Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>